EP1792155A1 - Drucksensor - Google Patents
DrucksensorInfo
- Publication number
- EP1792155A1 EP1792155A1 EP05775635A EP05775635A EP1792155A1 EP 1792155 A1 EP1792155 A1 EP 1792155A1 EP 05775635 A EP05775635 A EP 05775635A EP 05775635 A EP05775635 A EP 05775635A EP 1792155 A1 EP1792155 A1 EP 1792155A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure sensor
- sensor according
- pressure
- measuring cell
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012528 membrane Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000009530 blood pressure measurement Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
- G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/0089—Transmitting or indicating the displacement of pistons by electrical, electromechanical, magnetic or electromagnetic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
Definitions
- the invention relates to a pressure sensor comprising a housing, a receiving element which can be exposed to a pressure chamber, which is attached to the housing by means of a metallic membrane, and a measuring cell which can indirectly measure a pressure which acts on the receiving element and the resultant force is transferred to the measuring cell.
- pressure sensors of the type mentioned above have been used for many years.
- EP 0902267 for example, a der ⁇ like pressure sensor is described.
- the pressure sensor is exposed to high temperatures, so that a high-temperature insensitive measuring element must be used.
- Object of the present invention is to provide a pressure sensor, which also used in small holes who ⁇ can.
- the pressure sensor according to the invention has a receiving element which is designed as a pin and projects out of the housing.
- the advantage of such an arrangement is that only a small bore must be attached to a pressure chamber to make a pressure measurement can.
- the pin only has to be so long that its front end in the installed state reaches at least approximately the wall of the pressure chamber.
- the bore provided for this purpose does not have to be perpendicular to the wall of the pressure chamber.
- Another advantage of this arrangement is that the measuring cell is not in the immediate vicinity of the pressure chamber and thus does not necessarily have to be resistant to high temperatures, even if high temperatures prevail in the pressure chamber.
- Fig. 1 is a schematic representation of a pressure sensor in the sliced according to the prior art
- FIG. 2 shows a schematic representation of a pressure sensor according to the invention in the section a) with front seal; b) with shoulder seal; c) with acceleration compensation (antistrain); d) with annealing function; e) with reduced mass of the pin;
- Fig. 3 is a partial view of a schematic representation of a pressure sensor according to the invention in the region of the membrane in the sliced.
- FIG. 1 shows a schematic representation of a pressure sensor 1 in the sliced according to the prior art. It typically has a housing 2 and a measuring cell 4 with a subsequently attached receiving element 3, which can transmit a pressure from a pressure chamber 10 to the measuring cell 4.
- the receiving element 3, typically a thin plate or membrane, is welded to the housing 2 at a welding point 9 which on the one hand has the function of sealing the interior of the pressure sensor 1 with respect to the pressure chamber 10 and on the other hand ensures the mobility of the receiving element 3.
- the pressure sensor 1 can be attached to a wall opening 11 of a workpiece 14 provided for this purpose, so that the outer surface of the receiving element 3 runs approximately continuously with the wall 11 of the pressure chamber 10.
- the sealing zone 13 of the pressure chamber 10 to the housing ⁇ 2 is located for example in the area behind the thread eighth
- FIG. 2 shows various variants of a pressure sensor 1 according to the invention.
- the latter also has a housing 2 as well as a measuring cell 4 and a receiving element 3.
- the measuring cell 4 is arranged centrally in the pressure sensor 1.
- this receiving element 3 is configured to a pin which is at least twice, preferably at least four times as long as its diameter.
- This pin 3 is also arranged centrally in the pressure sensor 1.
- Another difference to the state of the art is that the receiving element 3 projects beyond the housing 2.
- This sealing zone 13, 13' can be either before or is arranged behind a thread 8, so that when mounting the pressure sensor 1 in a mounting opening 12 of a workpiece 14, a portion of the housing 2 can seal to a corresponding projection on the mounting hole 12.
- the mounting opening 12 in the wall 11 of the workpiece 14 may consist in the foremost region to the pressure chamber 10 only of ei ⁇ ner thin bore into which the receiving element 3 can be inserted.
- the bore therefore does not have to be so large that a pressure sensor 1 can fit into it.
- a pressure sensor 1 according to the invention can be installed in a cylinder head gasket, which is known to be very thin.
- the receiving element 3 in the form of a pin must seal well to the interior of the pressure sensor 1.
- a metallic diaphragm 5 is used, which is attached to the housing 2.
- This membrane 5 is designed in a ring shape to form a ring membrane and is shown in FIG. 3 in an enlarged illustration.
- This annular membrane 5 surrounds the receiving element 3 inside and seals at its outer edge to Housing 2 down from.
- this membrane 5 ' is welded to the receiving element 3 and / or to the housing 2 at welding points 9.
- the membrane 5 is flexible enough to permit movement of the receiving element 3, which occurs when used under pressure load.
- the membrane 5 should consist of a high-temperature-resistant material, preferably of a nickel-based alloy. Thanks to this material, such a membrane 5 has a very long service life.
- the sensitivity of the pressure sensor 1 is increased. Due to the small force bypass, the installation sensitivity is also very low. Thanks to the membrane seal, linearity and hysteresis are below 0.2%.
- the membrane 5 acts as a spring in the single-mass oscillator system. This system can be optimized so that the acceleration sensitivity is very low.
- the measuring cell 4 used is preferably a piezoelectric measuring cell 4.
- a pressure in the pressure chamber 10 acts via the receiving element 3 as a force on the measuring cell 4. Therefore, in the inventive arrangement as a measuring cell 4, a load cell is used, whereby an indirectly measuring pressure sensor 1 is formed.
- an acceleration-compensated pressure sensor is used as the basis for the pressure sensor 1 according to the invention. det. Of course, any pressure sensor specialized for an application can be used. Many design changes, in particular in the attachment of the pressure sensor line or in the choice of material, are known and can be combined with the present invention.
- the measuring cell 4 can be biased independently of the installation situation. This is advantageous if the measuring cell 4 is to be installed as a finished component in an existing housing of the pressure sensor 1.
- Fig. 2c Also shown in Fig. 2c) is shown the possibility of an oblique to the wall 11 of the pressure chamber 10, that is, not perpendicular to this, provide mounting opening 12. This may be necessary if the workpiece 14 is equipped with other components, for example with cooling or heating channels, which must not be traversed.
- the pressure sensor 1 according to the invention is particularly suitable for measuring the pressures in injection molding tools.
- the pressure sensor 1 according to the invention may also be suitable for measuring a pressure in a combustion chamber, in particular an engine combustion chamber, for example in a diesel engine.
- a pressure sensor 1 according to FIG. 2d is used.
- This pressure sensor 1 is integrated in a glow plug.
- the force-transmitting receiving element 3 is a glow plug of the glow plug.
- This glow plug can also be a corresponding dummy, which can not be heated.
- the sealing part 7, to which the sealing zone 13 of the pressure chamber 10 is attached be a separate element from the housing 2.
- the membrane 5 is also firmly sealed to this sealing part 7, - preferably welded.
- FIG. 2e shows a further variant of a pressure sensor 1 according to the invention.
- the receiving element 3 has been made hollow in order to reduce its mass. This increases the natural frequency of the pin 3, which leads to fewer disturbances during measurements.
- the mass can also be reduced by using a light material such as titanium, ceramic.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Fluid Pressure (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05775635T PL1792155T3 (pl) | 2004-09-22 | 2005-09-06 | Czujnik ciśnienia |
SI200531532T SI1792155T1 (sl) | 2004-09-22 | 2005-09-06 | Tlačni senzor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH15622004 | 2004-09-22 | ||
PCT/CH2005/000503 WO2006032152A1 (de) | 2004-09-22 | 2005-09-06 | Drucksensor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1792155A1 true EP1792155A1 (de) | 2007-06-06 |
EP1792155B1 EP1792155B1 (de) | 2012-05-02 |
Family
ID=34974737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05775635A Revoked EP1792155B1 (de) | 2004-09-22 | 2005-09-06 | Drucksensor |
Country Status (8)
Country | Link |
---|---|
US (1) | US7472600B2 (de) |
EP (1) | EP1792155B1 (de) |
JP (1) | JP5715320B2 (de) |
AT (1) | ATE556304T1 (de) |
ES (1) | ES2384389T3 (de) |
PL (1) | PL1792155T3 (de) |
SI (1) | SI1792155T1 (de) |
WO (1) | WO2006032152A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007001445A1 (de) * | 2007-01-03 | 2008-07-10 | Vega Grieshaber Kg | Abdichteinrichtung zum Verschließen eines Druckmesszellengehäuses, Druckmesszelleneinrichtung bzw. Druckmessvorrichtung damit |
DE102008017110B3 (de) * | 2008-04-02 | 2009-09-10 | Beru Ag | Druckmessglühkerze |
DE102008020510B4 (de) * | 2008-04-23 | 2010-02-11 | Beru Ag | Vorrichtung und Verfahren zur Ermittlung des Brennraumdruckes |
JP2011522263A (ja) * | 2008-06-04 | 2011-07-28 | キストラー ホールディング アクチエンゲゼルシャフト | 内燃機関のチャンバ測定のための圧力センサ |
CH702257A1 (de) * | 2009-11-25 | 2011-05-31 | Kistler Holding Ag | Drucksensor. |
DE102010025772A1 (de) * | 2010-07-01 | 2012-01-05 | Borgwarner Beru Systems Gmbh | Drucksensor für eine Glühkerze |
DE102011087641A1 (de) * | 2011-12-02 | 2013-06-06 | Robert Bosch Gmbh | Druckmesseinrichtung mit Zusatzmembran |
CN104169702B (zh) * | 2012-03-16 | 2016-07-06 | 西铁城精密器件株式会社 | 带有燃烧压力检测装置的内燃机 |
US20160153443A1 (en) * | 2013-10-30 | 2016-06-02 | Lime Instruments, Llc | Sensor assembly for measuring dynamic pressure in reciprocating pumps |
DE102016114929B4 (de) * | 2016-08-11 | 2018-05-09 | Borgwarner Ludwigsburg Gmbh | Druckmessglühkerze |
JP7403339B2 (ja) | 2020-02-17 | 2023-12-22 | 株式会社Jr東日本クロスステーション | 自動麺ゆで装置 |
DE102022117755A1 (de) * | 2022-07-15 | 2024-01-18 | Priamus System Technologies, Zweigniederlassung der Barnes Group Suisse Industries GmbH | Sensoreinheit zur Überwachung einer Kavität in einer Spritzgiessform |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5853732A (ja) * | 1981-09-26 | 1983-03-30 | Yamashiro Seiki Seisakusho:Kk | 射出成形機における金型内圧力検出装置 |
JPS5985932A (ja) * | 1982-11-09 | 1984-05-18 | Nippon Soken Inc | グロ−プラグ |
JPS59216028A (ja) * | 1983-05-24 | 1984-12-06 | Junji Isoyama | 内燃機関用指圧器 |
JP2580115B2 (ja) * | 1985-12-16 | 1997-02-12 | 日本電装株式会社 | 圧力検出器 |
JPH04131722A (ja) * | 1990-09-21 | 1992-05-06 | Toyota Motor Corp | 圧力センサ及び圧力センサの製造方法 |
JPH04118642U (ja) * | 1991-04-04 | 1992-10-23 | 日本電子機器株式会社 | 圧力センサ |
JP2537221Y2 (ja) * | 1991-07-29 | 1997-05-28 | 日本特殊陶業株式会社 | 圧力センサ |
JPH05164643A (ja) * | 1991-12-17 | 1993-06-29 | Matsushita Electric Ind Co Ltd | 圧電型圧力センサ |
JP3123799B2 (ja) * | 1991-12-24 | 2001-01-15 | 日本特殊陶業株式会社 | 圧力センサ |
JPH06265430A (ja) * | 1993-03-11 | 1994-09-22 | Nissan Motor Co Ltd | 筒内圧センサ |
AT402116B (de) * | 1994-12-19 | 1997-02-25 | Avl Verbrennungskraft Messtech | Zündkerze mit einem kraftmesselement zur messung des an der zündkerze anliegenden druckes |
US5587601A (en) * | 1995-06-05 | 1996-12-24 | Kulite Semiconductor Products, Inc. | Support structure for a semiconductor pressure transducer |
JP3177819B2 (ja) * | 1995-09-05 | 2001-06-18 | 株式会社ユニシアジェックス | 内燃機関の筒内圧力検出装置 |
JP3427667B2 (ja) * | 1997-03-07 | 2003-07-22 | エヌオーケー株式会社 | 圧力センサ |
CH691625A5 (de) * | 1997-09-15 | 2001-08-31 | Kk Holding Ag | Beschleunigungskompensierter Druckkaufnehmer. |
JP2000130752A (ja) * | 1998-10-29 | 2000-05-12 | Ngk Spark Plug Co Ltd | グロープラグ |
AT5949U1 (de) * | 2002-01-25 | 2003-01-27 | Avl List Gmbh | Druckmesssonde zur messung des druckes im brennraum einer brennkraftmaschine |
JP4206941B2 (ja) * | 2003-06-12 | 2009-01-14 | 株式会社デンソー | 燃焼圧センサ |
DE10343521A1 (de) * | 2003-09-19 | 2005-04-21 | Beru Ag | Druckmessglühkerze für einen Dieselmotor |
DE102005009351B4 (de) * | 2004-03-03 | 2013-05-23 | Denso Corporation | Drucksensor und Verfahren zu seinem Zusammenbau |
-
2005
- 2005-09-06 ES ES05775635T patent/ES2384389T3/es active Active
- 2005-09-06 JP JP2007531562A patent/JP5715320B2/ja not_active Expired - Fee Related
- 2005-09-06 EP EP05775635A patent/EP1792155B1/de not_active Revoked
- 2005-09-06 AT AT05775635T patent/ATE556304T1/de active
- 2005-09-06 US US11/575,778 patent/US7472600B2/en not_active Expired - Fee Related
- 2005-09-06 PL PL05775635T patent/PL1792155T3/pl unknown
- 2005-09-06 SI SI200531532T patent/SI1792155T1/sl unknown
- 2005-09-06 WO PCT/CH2005/000503 patent/WO2006032152A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2006032152A1 * |
Also Published As
Publication number | Publication date |
---|---|
SI1792155T1 (sl) | 2012-08-31 |
JP2008513743A (ja) | 2008-05-01 |
JP5715320B2 (ja) | 2015-05-07 |
EP1792155B1 (de) | 2012-05-02 |
ES2384389T3 (es) | 2012-07-04 |
US7472600B2 (en) | 2009-01-06 |
PL1792155T3 (pl) | 2012-09-28 |
WO2006032152A1 (de) | 2006-03-30 |
US20070277617A1 (en) | 2007-12-06 |
ATE556304T1 (de) | 2012-05-15 |
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Inventor name: KRUEGER, JUERGEN Inventor name: SALTIKOV, PAVLO Inventor name: LUDWIG, THOMAS Inventor name: CAVALLONI, CLAUDIO Inventor name: KERN, CHRISTOPH Inventor name: SCHOTT, STEFFEN Inventor name: MUELLER, MICHAEL Inventor name: WOLFER, PETER Inventor name: HESS, REINHOLD |
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